WO2013061992A1 - Mobile communication method and radio base station - Google Patents

Mobile communication method and radio base station Download PDF

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Publication number
WO2013061992A1
WO2013061992A1 PCT/JP2012/077442 JP2012077442W WO2013061992A1 WO 2013061992 A1 WO2013061992 A1 WO 2013061992A1 JP 2012077442 W JP2012077442 W JP 2012077442W WO 2013061992 A1 WO2013061992 A1 WO 2013061992A1
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Prior art keywords
base station
radio base
network signaling
mobile station
cluster communication
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PCT/JP2012/077442
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French (fr)
Japanese (ja)
Inventor
佑太 寒河江
アニール ウメシュ
大將 梅田
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株式会社エヌ・ティ・ティ・ドコモ
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Priority to EP12843250.7A priority Critical patent/EP2773155A4/en
Priority to US14/354,057 priority patent/US20140269601A1/en
Publication of WO2013061992A1 publication Critical patent/WO2013061992A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/22—Manipulation of transport tunnels

Definitions

  • the present invention relates to a mobile communication method and a radio base station.
  • Non-Patent Documents 1 and 2 In the LTE (Long Term Evolution) system, protection standards are provided for protecting other mobile communication systems operating in adjacent bands (see Non-Patent Documents 1 and 2).
  • A-MPR Additional-Maximum Power Reduction
  • the radio base station eNB performs network signaling called “NS (Network Signaling)” or “additional Spectrum Emission” defined for a supported band in an area where “A-MPR” is applicable. By notifying the value, the application method of the “A-MPR” is notified.
  • NS Network Signaling
  • CC Component Carrier
  • SC-FDMA Single Carrier-FDMA
  • An object of the present invention is to provide a mobile communication method and a radio base station that can be used.
  • a first feature of the present invention is a mobile communication method, in which an individual signal is transmitted to a mobile station in which a radio base station performs single cluster communication using one component carrier in a supported band.
  • the gist of the invention is that it has a step A for notifying a network signaling value and a step B for reducing the transmission power in the single cluster communication based on the network signaling value by the mobile station.
  • the second feature of the present invention is a radio base station eNB, which uses a dedicated signal for a mobile station UE that performs single cluster communication using one component carrier in a supported band.
  • the gist of the present invention is to include a transmission unit 12 configured to notify a signaling value.
  • a third feature of the present invention is a mobile station that uses a plurality of subcarrier groups in one component carrier in a supported band when a network signaling value is not notified by an individual signal.
  • the transmission power is reduced based on the network signaling value notified by the broadcast signal, as in the case of the single cluster communication using one component carrier in the one component carrier.
  • the gist is that it is configured.
  • FIG. 1 is an overall configuration diagram of a mobile communication system according to a first embodiment of the present invention.
  • FIG. 2 is a diagram for explaining the concept of single cluster communication and multi-cluster communication performed in the mobile communication system according to the first embodiment of the present invention.
  • FIG. 3 is a functional block diagram of the radio base station according to the first embodiment of the present invention.
  • FIG. 4 is a sequence diagram showing operations of the mobile communication system according to the first embodiment of the present invention.
  • Mobile communication system according to the first embodiment of the present invention A mobile communication system according to a first embodiment of the present invention will be described with reference to FIG. 1 to FIG. In all the drawings for explaining the present embodiment, the same reference numerals are used for those having the same function, and repeated explanation is omitted.
  • the mobile communication system is compatible with the LTE-Release 10 system, and includes a radio base station eNB and a mobile station UE as shown in FIG.
  • the radio base station eNB and the mobile station UE are each a single component carrier (one subcarrier group in one component carrier). Cluster communication and multi-cluster communication using a plurality of subcarrier groups in one component carrier) can be performed.
  • the radio base station eNB and the mobile station UE may be configured to perform carrier aggregation (CA) communication using a plurality of component carriers. Good.
  • CA carrier aggregation
  • the radio base station eNB and the mobile station UE are configured to perform multi-cluster transmission in each of a plurality of component carriers.
  • the present invention can be applied to each component carrier.
  • the radio base station eNB includes a reception unit 11, a transmission unit 12, and a scheduling unit 13.
  • the receiving unit 11 is configured to receive various signals from the mobile station UE existing in a cell under the radio base station eNB.
  • the receiving unit 11 is configured to receive “UE Capability Information (capability information)” of the mobile station UE from the mobile station UE.
  • Such “UE Capability Information” includes, for example, information on whether multi-cluster communication or carrier aggregation communication can be supported.
  • the transmission unit 12 is configured to transmit a notification signal and an individual signal to the mobile station UE.
  • the transmission unit 12 sends a network signaling value for a band supported by the radio base station eNB (for example, “NS” or “AdditionalSpectrumEmission”).
  • a network signaling value for a band supported by the radio base station eNB for example, “NS” or “AdditionalSpectrumEmission”.
  • the transmission unit 12 transmits, to the mobile station UE in the “Connected state” in the cell under the radio base station eNB, “RRC Reconfiguration”, which is an individual signal, in a band supported by the radio base station eNB. It is configured to notify a network signaling value (for example, “NS” or “additional Spectrum Emission”) for multi-cluster communication.
  • a network signaling value for example, “NS” or “additional Spectrum Emission”
  • the transmission unit 12 may be configured to notify the network signaling value via an information element in the “RRC Reconfiguration” (for example, an information element called “additionalSpectrumEmissionPcell” or “additionalSpectrumEmissionCA”). Good.
  • RRC Reconfiguration for example, an information element called “additionalSpectrumEmissionPcell” or “additionalSpectrumEmissionCA”. Good.
  • an information element called “additionalSpectrumEmissionPcell”, “additionalSpectrumEmissionCA”, or the like (see TS36.331 of 3GPP) is an information element used to notify a network signaling value for carrier aggregation communication.
  • the transmitting unit 12 notifies the network signaling value by the “RRC Reconfiguration” before the mobile station UE starts using a predetermined function (for example, a function added after the LTE-Release 10 method). It may be configured as follows.
  • the transmission unit 12 may be configured to notify the network signaling value by the “RRC Reconfiguration” before the mobile station UE starts multi-cluster communication.
  • the mobile station UE can also perform multi-cluster communication using a plurality of subcarrier groups in one component carrier in a supported band when the network signaling value is not notified by “RRC Reconfiguration”. As in the case of single cluster communication using one component carrier in one component carrier, the transmission power is reduced based on the network signaling value notified by the broadcast signal.
  • the transmission unit 12 is configured to transmit a scheduling signal in response to an instruction from the scheduling unit 13 to the mobile station UE in the “Connected state” in the cell under the radio base station eNB.
  • the transmission unit 12 is configured to transmit a scheduling signal for performing single cluster communication or multi-cluster communication to the mobile station UE in the “Connected state” in the cell under the radio base station eNB. .
  • the transmission unit 12 transmits “RRC Reconfiguration” for setting for performing carrier aggregation communication to the mobile station UE in the “Connected state” in the cell under the radio base station eNB. It may be configured.
  • the scheduling unit 13 is configured to perform a scheduling process on the mobile station UE in the “Connected state” in a cell under the radio base station eNB, and to instruct the transmission unit 12 based on the scheduling process.
  • the scheduling unit 13 may be configured to determine whether to allow the mobile station UE to perform multi-cluster communication based on “UE Capability Information” received by the receiving unit 11.
  • step S1001 the mobile station UE sets up an RRC connection with the radio base station eNB, and then, according to “UE Capability Enquiry” from the radio base station eNB, the radio base station eNB The mobile station UE transmits “UE Capability Information (capability information)” corresponding to the station eNB.
  • the radio base station eNB determines that the mobile station UE performs multi-cluster communication based on the received “UE Capability Information”
  • the radio base station eNB performs radio communication with the mobile station UE by “RRC Reconfiguration” in step S1002.
  • a network signaling value for multi-cluster communication within the band supported by the base station eNB is notified, and in step S1003, a scheduling signal for causing the mobile station UE to perform multi-cluster communication is transmitted.
  • the radio base station eNB determines that there is no particular need, it does not have to notify the network signaling value for multi-cluster communication in the band supported by the radio base station eNB in step S1002. .
  • step S1004 the mobile station UE performs multi-cluster communication in a band supported by the radio base station eNB based on the received scheduling signal.
  • the mobile station UE reduces the transmission power in the multi-cluster communication based on the network signaling value for multi-cluster communication notified by the received “RRC Reconfiguration”.
  • the mobile station UE has also received the network signaling value for the band supported by the radio base station eNB notified by the broadcast signal transmitted by the radio base station eNB.
  • the transmission power in the multi-cluster communication may be reduced based on the network signaling value notified by the broadcast signal.
  • the radio base station eNB uses “RRC Reconfiguration” to obtain a network signaling value for multi-cluster communication in the band supported by the radio base station eNB. Since the notification can be made, the network signaling value for multi-cluster communication can be used within the band supported by the radio base station eNB without defining a new band.
  • a first feature of the present embodiment is a mobile communication method, in which a radio base station eNB performs a single cluster communication using one component carrier in a supported band for a mobile station UE , The step A of notifying the network signaling value by “RRC Reconfiguration (individual signal)”, and the step of the mobile station UE reducing the transmission power in the single cluster communication based on the network signaling value.
  • RRC Reconfiguration individual signal
  • the radio base station eNB You may notify the above-mentioned network signaling value with respect to UE.
  • a second feature of the present embodiment is that the radio base station eNB is “RRC Reconfiguration” for a mobile station UE performing single cluster communication using one component carrier in a supported band.
  • the gist of the present invention is to provide a transmission unit 12 configured to notify a network signaling value.
  • the transmission unit 12 Before the mobile station UE starts multi-cluster communication using a plurality of subcarrier groups in one component carrier, the transmission unit 12 The network signaling value may be notified.
  • the third feature of the present embodiment is the mobile station UE, and when the network signaling value is not notified by “RRC Reconfiguration”, a plurality of sub-carriers in one component carrier in the supported band
  • RRC Reconfiguration a plurality of sub-carriers in one component carrier in the supported band
  • transmission power is reduced based on the network signaling value notified by the broadcast signal.
  • the gist is that it is configured to perform.
  • radio base station eNB and the mobile station UE described above may be implemented by hardware, may be implemented by a software module executed by a processor, or may be implemented by a combination of both. .
  • Software modules include RAM (Random Access Memory), flash memory, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electronically Erasable and Programmable, Removable ROM, and Hard Disk). Alternatively, it may be provided in an arbitrary format storage medium such as a CD-ROM.
  • the storage medium is connected to the processor so that the processor can read and write information from and to the storage medium. Further, such a storage medium may be integrated in the processor. Such a storage medium and processor may be provided in the ASIC. Such an ASIC may be provided in the radio base station eNB or the mobile station UE. Further, the storage medium and the processor may be provided as a discrete component in the radio base station eNB or the mobile station UE.
  • a mobile communication method capable of using a network signaling value for multi-cluster communication in an existing band in which no network signaling value is defined without defining a new band.
  • a radio base station can be provided.
  • UE ... mobile station eNB ... radio base station 11 ... receiving unit 12 ... transmitting unit 13 ... scheduling unit

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The objective of the invention is to allow network signaling values for multi-cluster communications to be used in existing bands, in which no network signaling values are defined, without defining any new bands. A mobile communication method of the invention comprises: a step (A) in which a radio base station (eNB) uses "RRC Reconfiguration" to report a network signaling value to a mobile station (UE) performing a single-cluster communication that uses a single component carrier in a band supported by the radio base station; and a step (B) in which the mobile station (UE) reduces, on the basis of the network signaling value, the transmission power in the single-cluster communication.

Description

移動通信方法及び無線基地局Mobile communication method and radio base station
　本発明は、移動通信方法及び無線基地局に関する。 The present invention relates to a mobile communication method and a radio base station.
　ＬＴＥ（Ｌｏｎｇ　Ｔｅｒｍ　Ｅｖｏｌｕｔｉｏｎ）方式では、隣接帯域において運用されている他の移動通信システムを保護するための保護基準が設けられている（非特許文献１及び２参照）。 In the LTE (Long Term Evolution) system, protection standards are provided for protecting other mobile communication systems operating in adjacent bands (see Non-Patent Documents 1 and 2).
　なお、ＬＴＥ方式では、かかる保護基準を守ることが難しい場合、移動局ＵＥにおける最大許容送信電力の低減を許容する「Ａ-ＭＰＲ（Ａｄｄｉｔｉｏｎａｌ-Ｍａｘｉｍｕｍ　Ｐｏｗｅｒ　Ｒｅｄｕｃｔｉｏｎ）」を適用することが規定されている。 In addition, in the LTE scheme, when it is difficult to observe such protection standards, it is specified that “A-MPR (Additional-Maximum Power Reduction)” that allows reduction of the maximum allowable transmission power in the mobile station UE is applied. .
　具体的には、無線基地局ｅＮＢは、「Ａ-ＭＰＲ」を適用可能な地域において、サポートしているバンドに対して定義されている「ＮＳ（Ｎｅｔｗｏｒｋ　Ｓｉｇｎａｌｉｎｇ）」或いは「ａｄｄｉｔｉｏｎａｌＳｐｅｃｔｒｕｍＥｍｉｓｓｉｏｎ」と呼ばれるネットワークシグナリング値を報知することによって、かかる「Ａ-ＭＰＲ」 の適用方法について通知するように構成されている。 Specifically, the radio base station eNB performs network signaling called “NS (Network Signaling)” or “additional Spectrum Emission” defined for a supported band in an area where “A-MPR” is applicable. By notifying the value, the application method of the “A-MPR” is notified.
　現在、既存のバンドのうちネットワークシグナリング値が定義されているバンドは限られている。 Currently, there are a limited number of existing bands where network signaling values are defined.
　また、既存のバンドにおいて、新たにネットワークシグナリング値が定義された場合、かかるバンドに対応している既存の移動局ＵＥは、かかるネットワークシグナリング値を理解することができない。 In addition, when a new network signaling value is defined in an existing band, the existing mobile station UE corresponding to the band cannot understand the network signaling value.
　したがって、ＬＴＥ方式では、このような現象を回避するために、新たに定義するバンドにおいて、新たにネットワークシグナリング値を定義するように規定されている。 Therefore, in the LTE system, in order to avoid such a phenomenon, it is specified that a new network signaling value is defined in a newly defined band.
　一方、ＬＴＥのＲｅｌｅａｓｅ１０方式では、単一のコンポーネントキャリア（ＣＣ：Ｃｏｍｐｏｎｅｎｔ　Ｃａｒｒｉｅｒ）内の複数のサブキャリア群を用いたマルチクラスタ（Ｍｕｌｔｉ-ｃｌｕｓｔｅｒ）通信を行うことができるように規定されている。 On the other hand, in the LTE Release 10 system, it is defined that multi-cluster communication using a plurality of subcarrier groups in a single component carrier (CC: Component Carrier) can be performed.
　ここで、マルチクラスタ通信を行う場合、１つのコンポーネントキャリア（１つのコンポーネントキャリア内の１つのサブキャリア）を用いたシングルクラスタ通信、すなわち、ＳＣ-ＦＤＭＡ（Ｓｉｎｇｌｅ　Ｃａｒｒｉｅｒ-ＦＤＭＡ）通信を行う場合に比べて、隣接帯域への漏洩電力が大きくなることが知られている。 Here, when performing multi-cluster communication, compared to performing single-cluster communication using one component carrier (one subcarrier within one component carrier), that is, SC-FDMA (Single Carrier-FDMA) communication. Thus, it is known that the leakage power to the adjacent band increases.
　したがって、ネットワークシグナリング値が定義されていない既存のバンドにおいて、マルチクラスタ通信用として新たにネットワークシグナリング値を定義する必要があるケースが存在すると想定される。 Therefore, it is assumed that there is a case where it is necessary to newly define a network signaling value for multi-cluster communication in an existing band in which a network signaling value is not defined.
　しかしながら、従来のＬＴＥ方式の規定では、マルチクラスタ通信用のネットワークシグナリング値を定義する場合には、上述のように、新たなバンドを定義して用いなければならなかった。 However, in the conventional LTE scheme, when a network signaling value for multi-cluster communication is defined, a new band must be defined and used as described above.
　そこで、本発明は、上述の課題に鑑みてなされたものであり、新たなバンドを定義することなく、ネットワークシグナリング値が定義されていない既存のバンドにおいて、マルチクラスタ通信用のネットワークシグナリング値を用いることができる移動通信方法及び無線基地局を提供することを目的とする。 Therefore, the present invention has been made in view of the above-described problems, and uses a network signaling value for multi-cluster communication in an existing band in which a network signaling value is not defined without defining a new band. An object of the present invention is to provide a mobile communication method and a radio base station that can be used.
　本発明の第１の特徴は、移動通信方法であって、無線基地局が、サポートしているバンド内の１つのコンポーネントキャリアを用いたシングルクラスタ通信を行っている移動局に対して、個別信号によって、ネットワークシグナリング値を通知する工程Ａと、前記移動局が、前記ネットワークシグナリング値に基づいて、前記シングルクラスタ通信における送信電力を低減する工程Ｂとを有することを要旨とする。 A first feature of the present invention is a mobile communication method, in which an individual signal is transmitted to a mobile station in which a radio base station performs single cluster communication using one component carrier in a supported band. Thus, the gist of the invention is that it has a step A for notifying a network signaling value and a step B for reducing the transmission power in the single cluster communication based on the network signaling value by the mobile station.
　本発明の第２の特徴は、無線基地局ｅＮＢであって、サポートしているバンド内の１つのコンポーネントキャリアを用いたシングルクラスタ通信を行っている移動局ＵＥに対して、個別信号によって、ネットワークシグナリング値を通知するように構成されている送信部１２を具備することを要旨とする。 The second feature of the present invention is a radio base station eNB, which uses a dedicated signal for a mobile station UE that performs single cluster communication using one component carrier in a supported band. The gist of the present invention is to include a transmission unit 12 configured to notify a signaling value.
　本発明の第３の特徴は、移動局であって、個別信号によってネットワークシグナリング値が通知されていない場合には、サポートしているバンド内の１つのコンポーネントキャリア内の複数のサブキャリア群を用いたマルチクラスタ通信においても、前記１つのコンポーネントキャリア内の１つのコンポーネントキャリアを用いたシングルクラスタ通信の場合と同様に、報知信号によって通知されたネットワークシグナリング値に基づいて送信電力の低減を行うように構成されていることを要旨とする。 A third feature of the present invention is a mobile station that uses a plurality of subcarrier groups in one component carrier in a supported band when a network signaling value is not notified by an individual signal. In the multi-cluster communication, the transmission power is reduced based on the network signaling value notified by the broadcast signal, as in the case of the single cluster communication using one component carrier in the one component carrier. The gist is that it is configured.
図１は、本発明の第１の実施形態に係る移動通信システムの全体構成図である。FIG. 1 is an overall configuration diagram of a mobile communication system according to a first embodiment of the present invention. 図２は、本発明の第１の実施形態に係る移動通信システムにおいて行われるシングルクラスタ通信及びマルチクラスタ通信の概念を説明するための図である。FIG. 2 is a diagram for explaining the concept of single cluster communication and multi-cluster communication performed in the mobile communication system according to the first embodiment of the present invention. 図３は、本発明の第１の実施形態に係る無線基地局の機能ブロック図である。FIG. 3 is a functional block diagram of the radio base station according to the first embodiment of the present invention. 図４は、本発明の第１の実施形態に係る移動通信システムの動作を示すシーケンス図である。FIG. 4 is a sequence diagram showing operations of the mobile communication system according to the first embodiment of the present invention.
（本発明の第１の実施形態に係る移動通信システム）
　図１乃至図４を参照して、本発明の第１の実施形態に係る移動通信システムについて説明する。本実施形態を説明するための全図において、同一機能を有するものは同一符号を用い、繰り返しの説明は省略する。 (Mobile communication system according to the first embodiment of the present invention)
A mobile communication system according to a first embodiment of the present invention will be described with reference to FIG. 1 to FIG. In all the drawings for explaining the present embodiment, the same reference numerals are used for those having the same function, and repeated explanation is omitted.
　本実施形態に係る移動通信システムは、ＬＴＥ-Ｒｅｌｅａｓｅ１０方式に対応しており、図１に示すように、無線基地局ｅＮＢ及び移動局ＵＥを具備している。 The mobile communication system according to the present embodiment is compatible with the LTE-Release 10 system, and includes a radio base station eNB and a mobile station UE as shown in FIG.
　また、本実施形態に係る移動通信システムでは、図２に示すように、無線基地局ｅＮＢ及び移動局ＵＥは、１つのコンポーネントキャリア（１つのコンポーネントキャリア内の１つのサブキャリア群）を用いたシングルクラスタ通信及び１つのコンポーネントキャリア内の複数のサブキャリア群）を用いたマルチクラスタ通信を行うことができるように構成されている。 In the mobile communication system according to the present embodiment, as illustrated in FIG. 2, the radio base station eNB and the mobile station UE are each a single component carrier (one subcarrier group in one component carrier). Cluster communication and multi-cluster communication using a plurality of subcarrier groups in one component carrier) can be performed.
　なお、本実施形態に係る移動通信システムでは、無線基地局ｅＮＢ及び移動局ＵＥは、複数のコンポーネントキャリアを用いたキャリアアグリゲーション（ＣＡ：Ｃａｒｒｉｅｒ　Ａｇｇｒｉｇａｔｉｏｎ）通信を行うことができるように構成されていてもよい。 Note that, in the mobile communication system according to the present embodiment, the radio base station eNB and the mobile station UE may be configured to perform carrier aggregation (CA) communication using a plurality of component carriers. Good.
　ここで、無線基地局ｅＮＢ及び移動局ＵＥは、複数のコンポーネントキャリアの各々においてマルチクラスタ送信を行うことができるように構成されている。かかる場合には、本発明は、各コンポーネントキャリアについて適用可能となる。 Here, the radio base station eNB and the mobile station UE are configured to perform multi-cluster transmission in each of a plurality of component carriers. In such a case, the present invention can be applied to each component carrier.
　図３に示すように、無線基地局ｅＮＢは、受信部１１と、送信部１２と、スケジューリング部１３とを具備している。 As illustrated in FIG. 3, the radio base station eNB includes a reception unit 11, a transmission unit 12, and a scheduling unit 13.
　受信部１１は、無線基地局ｅＮＢ配下のセルに存在する移動局ＵＥから各種信号を受信するように構成されている。 The receiving unit 11 is configured to receive various signals from the mobile station UE existing in a cell under the radio base station eNB.
　例えば、受信部１１は、移動局ＵＥから、移動局ＵＥの「ＵＥ　Ｃａｐａｂｉｌｉｔｙ　Ｉｎｆｏｒｍａｔｉｏｎ（能力情報）」を受信するように構成されている。 For example, the receiving unit 11 is configured to receive “UE Capability Information (capability information)” of the mobile station UE from the mobile station UE.
　かかる「ＵＥ　Ｃａｐａｂｉｌｉｔｙ　Ｉｎｆｏｒｍａｔｉｏｎ」には、例えば、マルチクラスタ通信やキャリアアグリゲーション通信に対応可能か否かについての情報等が含まれている。 Such “UE Capability Information” includes, for example, information on whether multi-cluster communication or carrier aggregation communication can be supported.
　送信部１２は、移動局ＵＥに対して、報知信号や個別信号を送信するように構成されている。 The transmission unit 12 is configured to transmit a notification signal and an individual signal to the mobile station UE.
　例えば、送信部１２は、無線基地局ｅＮＢ配下のセルに存在する移動局ＵＥに対して、報知信号によって、無線基地局ｅＮＢがサポートしているバンド用のネットワークシグナリング値（例えば、「ＮＳ」や「ａｄｄｉｔｉｏｎａｌＳｐｅｃｔｒｕｍＥｍｉｓｓｉｏｎ」）を通知するように構成されている。 For example, the transmission unit 12 sends a network signaling value for a band supported by the radio base station eNB (for example, “NS” or “AdditionalSpectrumEmission”).
　また、送信部１２は、無線基地局ｅＮＢ配下のセルにおいて「Ｃｏｎｎｅｃｔｅｄ状態」にある移動局ＵＥに対して、個別信号である「ＲＲＣ　Ｒｅｃｏｎｆｉｇｕｒａｔｉｏｎ」によって、無線基地局ｅＮＢがサポートしているバンド内のマルチクラスタ通信用のネットワークシグナリング値（例えば、「ＮＳ」や「ａｄｄｉｔｉｏｎａｌＳｐｅｃｔｒｕｍＥｍｉｓｓｉｏｎ」）を通知するように構成されている。 In addition, the transmission unit 12 transmits, to the mobile station UE in the “Connected state” in the cell under the radio base station eNB, “RRC Reconfiguration”, which is an individual signal, in a band supported by the radio base station eNB. It is configured to notify a network signaling value (for example, “NS” or “additional Spectrum Emission”) for multi-cluster communication.
　例えば、送信部１２は、かかる「ＲＲＣ　Ｒｅｃｏｎｆｉｇｕｒａｔｉｏｎ」内の情報要素（例えば、「ａｄｄｉｔｉｏｎａｌＳｐｅｃｔｒｕｍＥｍｉｓｓｉｏｎＰｃｅｌｌ」や「ａｄｄｉｔｉｏｎａｌＳｐｅｃｔｒｕｍＥｍｉｓｓｉｏｎＣＡ」等と呼ばれる情報要素）を介して、かかるネットワークシグナリング値を通知するように構成されていてもよい。 For example, the transmission unit 12 may be configured to notify the network signaling value via an information element in the “RRC Reconfiguration” (for example, an information element called “additionalSpectrumEmissionPcell” or “additionalSpectrumEmissionCA”). Good.
　ここで、「ａｄｄｉｔｉｏｎａｌＳｐｅｃｔｒｕｍＥｍｉｓｓｉｏｎＰｃｅｌｌ」や「ａｄｄｉｔｉｏｎａｌＳｐｅｃｔｒｕｍＥｍｉｓｓｉｏｎＣＡ」等と呼ばれる情報要素（３ＧＰＰのＴＳ３６.３３１参照）は、キャリアアグリゲーション通信用のネットワークシグナリング値を通知するために用いられる情報要素である。 Here, an information element called “additionalSpectrumEmissionPcell”, “additionalSpectrumEmissionCA”, or the like (see TS36.331 of 3GPP) is an information element used to notify a network signaling value for carrier aggregation communication.
　なお、送信部１２は、かかる移動局ＵＥが所定機能（例えば、ＬＴＥ-Ｒｅｌｅａｓｅ１０方式以降に追加される機能）の使用を開始する前に、かかる「ＲＲＣ　Ｒｅｃｏｎｆｉｇｕｒａｔｉｏｎ」によって、かかるネットワークシグナリング値を通知するように構成されていてもよい。 The transmitting unit 12 notifies the network signaling value by the “RRC Reconfiguration” before the mobile station UE starts using a predetermined function (for example, a function added after the LTE-Release 10 method). It may be configured as follows.
　例えば、送信部１２は、かかる移動局ＵＥがマルチクラスタ通信を開始する前に、かかる「ＲＲＣ　Ｒｅｃｏｎｆｉｇｕｒａｔｉｏｎ」によって、かかるネットワークシグナリング値を通知するように構成されていてもよい。 For example, the transmission unit 12 may be configured to notify the network signaling value by the “RRC Reconfiguration” before the mobile station UE starts multi-cluster communication.
　なお、移動局ＵＥは、「ＲＲＣ　Ｒｅｃｏｎｆｉｇｕｒａｔｉｏｎ」によってネットワークシグナリング値が通知されていない場合には、サポートしているバンド内の１つのコンポーネントキャリア内の複数のサブキャリア群を用いたマルチクラスタ通信においても、かかる１つのコンポーネントキャリア内の１つのコンポーネントキャリアを用いたシングルクラスタ通信の場合と同様に、報知信号によって通知されたネットワークシグナリング値に基づいて送信電力の低減を行うように構成されている。 The mobile station UE can also perform multi-cluster communication using a plurality of subcarrier groups in one component carrier in a supported band when the network signaling value is not notified by “RRC Reconfiguration”. As in the case of single cluster communication using one component carrier in one component carrier, the transmission power is reduced based on the network signaling value notified by the broadcast signal.
　或いは、送信部１２は、無線基地局ｅＮＢ配下のセルにおいて「Ｃｏｎｎｅｃｔｅｄ状態」にある移動局ＵＥに対して、スケジューリング部１３からの指示に応じて、スケジューリング信号を送信するように構成されている。 Alternatively, the transmission unit 12 is configured to transmit a scheduling signal in response to an instruction from the scheduling unit 13 to the mobile station UE in the “Connected state” in the cell under the radio base station eNB.
　例えば、送信部１２は、無線基地局ｅＮＢ配下のセルにおいて「Ｃｏｎｎｅｃｔｅｄ状態」にある移動局ＵＥに対して、シングルクラスタ通信又はマルチクラスタ通信を行うためのスケジューリング信号を送信するように構成されている。 For example, the transmission unit 12 is configured to transmit a scheduling signal for performing single cluster communication or multi-cluster communication to the mobile station UE in the “Connected state” in the cell under the radio base station eNB. .
　ここで、送信部１２は、無線基地局ｅＮＢ配下のセルにおいて「Ｃｏｎｎｅｃｔｅｄ状態」にある移動局ＵＥに対して、キャリアアグリゲーション通信を行うための設定を行うための「ＲＲＣ　Ｒｅｃｏｎｆｉｇｕｒａｔｉｏｎ」を送信するように構成されていてもよい。 Here, the transmission unit 12 transmits “RRC Reconfiguration” for setting for performing carrier aggregation communication to the mobile station UE in the “Connected state” in the cell under the radio base station eNB. It may be configured.
　スケジューリング部１３は、無線基地局ｅＮＢ配下のセルにおいて「Ｃｏｎｎｅｃｔｅｄ状態」にある移動局ＵＥに対するスケジューリング処理を行い、送信部１２に対して、かかるスケジューリング処理に基づく指示を行うように構成されている。 The scheduling unit 13 is configured to perform a scheduling process on the mobile station UE in the “Connected state” in a cell under the radio base station eNB, and to instruct the transmission unit 12 based on the scheduling process.
　例えば、スケジューリング部１３は、受信部１１によって受信された「ＵＥ　Ｃａｐａｂｉｌｉｔｙ　Ｉｎｆｏｒｍａｔｉｏｎ」に基づいて、移動局ＵＥにマルチクラスタ通信を行わせるか否かについて決定するように構成されていてもよい。 For example, the scheduling unit 13 may be configured to determine whether to allow the mobile station UE to perform multi-cluster communication based on “UE Capability Information” received by the receiving unit 11.
　以下、図４を参照して、本実施形態に係る移動通信システムの動作の一例について説明する。 Hereinafter, an example of the operation of the mobile communication system according to the present embodiment will be described with reference to FIG.
　図４に示すように、ステップＳ１００１において、移動局ＵＥは、無線基地局ｅＮＢとの間でＲＲＣコネクションを設定した後、かかる無線基地局ｅＮＢからの「ＵＥ　Ｃａｐａｂｉｌｉｔｙ　Ｅｎｑｕｉｒｙ」に応じて、かかる無線基地局ｅＮＢに対して、移動局ＵＥが対応する「ＵＥ　Ｃａｐａｂｉｌｉｔｙ　Ｉｎｆｏｒｍａｔｉｏｎ（能力情報）」を送信する。 As shown in FIG. 4, in step S1001, the mobile station UE sets up an RRC connection with the radio base station eNB, and then, according to “UE Capability Enquiry” from the radio base station eNB, the radio base station eNB The mobile station UE transmits “UE Capability Information (capability information)” corresponding to the station eNB.
　無線基地局ｅＮＢは、受信した「ＵＥ　Ｃａｐａｂｉｌｉｔｙ　Ｉｎｆｏｒｍａｔｉｏｎ」に基づいて、移動局ＵＥにマルチクラスタ通信を行わせると決定すると、かかる移動局ＵＥに対して、ステップＳ１００２において、「ＲＲＣ　Ｒｅｃｏｎｆｉｇｕｒａｔｉｏｎ」によって、無線基地局ｅＮＢがサポートしているバンド内のマルチクラスタ通信用のネットワークシグナリング値を通知し、ステップＳ１００３において、かかる移動局ＵＥにマルチクラスタ通信を行わせるためのスケジューリング信号を送信する。 When the radio base station eNB determines that the mobile station UE performs multi-cluster communication based on the received “UE Capability Information”, the radio base station eNB performs radio communication with the mobile station UE by “RRC Reconfiguration” in step S1002. A network signaling value for multi-cluster communication within the band supported by the base station eNB is notified, and in step S1003, a scheduling signal for causing the mobile station UE to perform multi-cluster communication is transmitted.
　なお、無線基地局ｅＮＢは、特に必要がないと判断した場合には、ステップＳ１００２において、無線基地局ｅＮＢがサポートしているバンド内のマルチクラスタ通信用のネットワークシグナリング値を通知しなくてもよい。 If the radio base station eNB determines that there is no particular need, it does not have to notify the network signaling value for multi-cluster communication in the band supported by the radio base station eNB in step S1002. .
　ステップＳ１００４において、移動局ＵＥは、受信したスケジューリング信号に基づいて、無線基地局ｅＮＢがサポートしているバンド内で、マルチクラスタ通信を行う。 In step S1004, the mobile station UE performs multi-cluster communication in a band supported by the radio base station eNB based on the received scheduling signal.
　ここで、移動局ＵＥは、受信した「ＲＲＣ　Ｒｅｃｏｎｆｉｇｕｒａｔｉｏｎ」によって通知されたマルチクラスタ通信用のネットワークシグナリング値に基づいて、かかるマルチクラスタ通信における送信電力を低減する。 Here, the mobile station UE reduces the transmission power in the multi-cluster communication based on the network signaling value for multi-cluster communication notified by the received “RRC Reconfiguration”.
　なお、移動局ＵＥは、無線基地局ｅＮＢによって送信された報知信号によって通知された無線基地局ｅＮＢがサポートしているバンド用のネットワークシグナリング値についても受信しているため、ステップＳ１００２において、上述のマルチクラスタ通信用のネットワークシグナリング値を受信しなかった場合には、報知信号によって通知されたネットワークシグナリング値に基づいて、かかるマルチクラスタ通信における送信電力を低減してもよい。 Note that the mobile station UE has also received the network signaling value for the band supported by the radio base station eNB notified by the broadcast signal transmitted by the radio base station eNB. When the network signaling value for multi-cluster communication is not received, the transmission power in the multi-cluster communication may be reduced based on the network signaling value notified by the broadcast signal.
　本発明の第１の実施形態に係る移動通信システムによれば、無線基地局ｅＮＢは、「ＲＲＣ　Ｒｅｃｏｎｆｉｇｕｒａｔｉｏｎ」によって、無線基地局ｅＮＢがサポートしているバンド内のマルチクラスタ通信用のネットワークシグナリング値を通知することができるため、新たなバンドを定義することなく、無線基地局ｅＮＢがサポートしているバンド内で、マルチクラスタ通信用のネットワークシグナリング値を利用することができる。 According to the mobile communication system according to the first embodiment of the present invention, the radio base station eNB uses “RRC Reconfiguration” to obtain a network signaling value for multi-cluster communication in the band supported by the radio base station eNB. Since the notification can be made, the network signaling value for multi-cluster communication can be used within the band supported by the radio base station eNB without defining a new band.
　以上に述べた本実施形態の特徴は、以下のように表現されていてもよい。 The features of the present embodiment described above may be expressed as follows.
　本実施形態の第１の特徴は、移動通信方法であって、無線基地局ｅＮＢが、サポートしているバンド内の１つのコンポーネントキャリアを用いたシングルクラスタ通信を行っている移動局ＵＥに対して、「ＲＲＣ　Ｒｅｃｏｎｆｉｇｕｒａｔｉｏｎ（個別信号）」によって、ネットワークシグナリング値を通知する工程Ａと、移動局ＵＥが、かかるネットワークシグナリング値に基づいて、シングルクラスタ通信における送信電力を低減する工程Ｂとを有することを要旨とする。 A first feature of the present embodiment is a mobile communication method, in which a radio base station eNB performs a single cluster communication using one component carrier in a supported band for a mobile station UE , The step A of notifying the network signaling value by “RRC Reconfiguration (individual signal)”, and the step of the mobile station UE reducing the transmission power in the single cluster communication based on the network signaling value. The gist.
　本実施形態の第１の特徴において、工程Ａにおいて、移動局ＵＥが、１つのコンポーネントキャリア内の複数のサブキャリア群を用いたマルチクラスタ通信を開始する前に、無線基地局ｅＮＢは、移動局ＵＥに対して、上述のネットワークシグナリング値を通知してもよい。 In the first feature of the present embodiment, before the mobile station UE starts multi-cluster communication using a plurality of subcarrier groups in one component carrier in step A, the radio base station eNB You may notify the above-mentioned network signaling value with respect to UE.
　本実施形態の第２の特徴は、無線基地局ｅＮＢであって、サポートしているバンド内の１つのコンポーネントキャリアを用いたシングルクラスタ通信を行っている移動局ＵＥに対して、「ＲＲＣ　Ｒｅｃｏｎｆｉｇｕｒａｔｉｏｎ」によって、ネットワークシグナリング値を通知するように構成されている送信部１２を具備することを要旨とする。 A second feature of the present embodiment is that the radio base station eNB is “RRC Reconfiguration” for a mobile station UE performing single cluster communication using one component carrier in a supported band. The gist of the present invention is to provide a transmission unit 12 configured to notify a network signaling value.
　本実施形態の第２の特徴において、移動局ＵＥが、１つのコンポーネントキャリア内の複数のサブキャリア群を用いたマルチクラスタ通信を開始する前に、送信部１２は、移動局ＵＥに対して、かかるネットワークシグナリング値を通知するように構成されていてもよい。 In the second feature of the present embodiment, before the mobile station UE starts multi-cluster communication using a plurality of subcarrier groups in one component carrier, the transmission unit 12 The network signaling value may be notified.
　本実施形態の第３の特徴は、移動局ＵＥであって、「ＲＲＣ　Ｒｅｃｏｎｆｉｇｕｒａｔｉｏｎ」によってネットワークシグナリング値が通知されていない場合には、サポートしているバンド内の１つのコンポーネントキャリア内の複数のサブキャリア群を用いたマルチクラスタ通信においても、かかる１つのコンポーネントキャリア内の１つのコンポーネントキャリアを用いたシングルクラスタ通信の場合と同様に、報知信号によって通知されたネットワークシグナリング値に基づいて送信電力の低減を行うように構成されていることを要旨とする。 The third feature of the present embodiment is the mobile station UE, and when the network signaling value is not notified by “RRC Reconfiguration”, a plurality of sub-carriers in one component carrier in the supported band In multi-cluster communication using a carrier group, similarly to the case of single cluster communication using one component carrier in the one component carrier, transmission power is reduced based on the network signaling value notified by the broadcast signal. The gist is that it is configured to perform.
　なお、上述の無線基地局ｅＮＢ及び移動局ＵＥの動作は、ハードウェアによって実施されてもよいし、プロセッサによって実行されるソフトウェアモジュールによって実施されてもよいし、両者の組み合わせによって実施されてもよい。 Note that the operations of the radio base station eNB and the mobile station UE described above may be implemented by hardware, may be implemented by a software module executed by a processor, or may be implemented by a combination of both. .
　ソフトウェアモジュールは、ＲＡＭ（Ｒａｎｄｏｍ　Ａｃｃｅｓｓ　Ｍｅｍｏｒｙ）や、フラッシュメモリや、ＲＯＭ（Ｒｅａｄ　Ｏｎｌｙ　Ｍｅｍｏｒｙ）や、ＥＰＲＯＭ（Ｅｒａｓａｂｌｅ　Ｐｒｏｇｒａｍｍａｂｌｅ　ＲＯＭ）や、ＥＥＰＲＯＭ（Ｅｌｅｃｔｒｏｎｉｃａｌｌｙ　Ｅｒａｓａｂｌｅ　ａｎｄ　Ｐｒｏｇｒａｍｍａｂｌｅ　ＲＯＭ）や、レジスタや、ハードディスクや、リムーバブルディスクや、ＣＤ-ＲＯＭといった任意形式の記憶媒体内に設けられていてもよい。 Software modules include RAM (Random Access Memory), flash memory, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electronically Erasable and Programmable, Removable ROM, and Hard Disk). Alternatively, it may be provided in an arbitrary format storage medium such as a CD-ROM.
　かかる記憶媒体は、プロセッサが当該記憶媒体に情報を読み書きできるように、当該プロセッサに接続されている。また、かかる記憶媒体は、プロセッサに集積されていてもよい。また、かかる記憶媒体及びプロセッサは、ＡＳＩＣ内に設けられていてもよい。かかるＡＳＩＣは、無線基地局ｅＮＢや移動局ＵＥ内に設けられていてもよい。また、かかる記憶媒体及びプロセッサは、ディスクリートコンポーネントとして無線基地局ｅＮＢや移動局ＵＥ内に設けられていてもよい。 The storage medium is connected to the processor so that the processor can read and write information from and to the storage medium. Further, such a storage medium may be integrated in the processor. Such a storage medium and processor may be provided in the ASIC. Such an ASIC may be provided in the radio base station eNB or the mobile station UE. Further, the storage medium and the processor may be provided as a discrete component in the radio base station eNB or the mobile station UE.
　以上、上述の実施形態を用いて本発明について詳細に説明したが、当業者にとっては、本発明が本明細書中に説明した実施形態に限定されるものではないということは明らかである。本発明は、請求の範囲の記載により定まる本発明の趣旨及び範囲を逸脱することなく修正及び変更態様として実施することができる。従って、本明細書の記載は、例示説明を目的とするものであり、本発明に対して何ら制限的な意味を有するものではない。 As described above, the present invention has been described in detail using the above-described embodiments. However, it is obvious for those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as modifications and changes without departing from the spirit and scope of the present invention defined by the description of the scope of claims. Therefore, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.
　なお、日本国特許出願第２０１１－２３６５０７号（２０１１年１０月２７日出願）の全内容が、参照により、本願明細書に組み込まれている。 Note that the entire contents of Japanese Patent Application No. 2011-236507 (filed on October 27, 2011) are incorporated herein by reference.
　以上説明したように、本発明によれば、新たなバンドを定義することなく、ネットワークシグナリング値が定義されていない既存のバンドにおいて、マルチクラスタ通信用のネットワークシグナリング値を用いることができる移動通信方法及び無線基地局を提供することができる。 As described above, according to the present invention, a mobile communication method capable of using a network signaling value for multi-cluster communication in an existing band in which no network signaling value is defined without defining a new band. And a radio base station can be provided.
ＵＥ…移動局
ｅＮＢ…無線基地局
１１…受信部
１２…送信部
１３…スケジューリング部 UE ... mobile station eNB ... radio base station 11 ... receiving unit 12 ... transmitting unit 13 ... scheduling unit

Claims (5)

  1. 　無線基地局が、サポートしているバンド内の１つのコンポーネントキャリアを用いたシングルクラスタ通信を行っている移動局に対して、個別信号によって、ネットワークシグナリング値を通知する工程Ａと、
    　前記移動局が、前記ネットワークシグナリング値に基づいて、前記シングルクラスタ通信における送信電力を低減する工程Ｂとを有することを特徴とする移動通信方法。     Step A in which a radio base station notifies a network signaling value by an individual signal to a mobile station performing single cluster communication using one component carrier in a supported band;
    The mobile communication method comprising: the step B of reducing the transmission power in the single cluster communication based on the network signaling value of the mobile station.
  2. 　前記工程Ａにおいて、前記移動局が、前記１つのコンポーネントキャリア内の複数のサブキャリア群を用いたマルチクラスタ通信を開始する前に、前記無線基地局は、該移動局に対して、前記ネットワークシグナリング値を通知することを特徴とする請求項１に記載の移動通信方法。 In the step A, before the mobile station starts multi-cluster communication using a plurality of subcarrier groups in the one component carrier, the radio base station transmits the network signaling to the mobile station. The mobile communication method according to claim 1, wherein a value is notified.
  3. 　無線基地局であって、
    　サポートしているバンド内の１つのコンポーネントキャリアを用いたシングルクラスタ通信を行っている移動局に対して、個別信号によって、ネットワークシグナリング値を通知するように構成されている送信部を具備することを特徴とする無線基地局。     A wireless base station,
    A transmitter configured to notify a network signaling value by a dedicated signal to a mobile station performing single cluster communication using one component carrier in a supported band; A featured radio base station.
  4. 　前記移動局が、前記１つのコンポーネントキャリア内の複数のサブキャリア群を用いたマルチクラスタ通信を開始する前に、前記送信部は、該移動局に対して、前記ネットワークシグナリング値を通知するように構成されていることを特徴とする請求項３に記載の無線基地局。 Before the mobile station starts multi-cluster communication using a plurality of subcarrier groups in the one component carrier, the transmission unit notifies the mobile station of the network signaling value. The radio base station according to claim 3, wherein the radio base station is configured.
  5. 　移動局であって、
    　個別信号によってネットワークシグナリング値が通知されていない場合には、サポートしているバンド内の１つのコンポーネントキャリア内の複数のサブキャリア群を用いたマルチクラスタ通信においても、前記１つのコンポーネントキャリア内の１つのコンポーネントキャリアを用いたシングルクラスタ通信の場合と同様に、報知信号によって通知されたネットワークシグナリング値に基づいて送信電力の低減を行うように構成されていることを特徴とする移動局。     A mobile station,
    When a network signaling value is not notified by an individual signal, even in multi-cluster communication using a plurality of subcarrier groups in one component carrier in a supported band, 1 in the one component carrier Similar to the case of single cluster communication using two component carriers, a mobile station is configured to reduce transmission power based on a network signaling value notified by a broadcast signal.
PCT/JP2012/077442 2011-10-27 2012-10-24 Mobile communication method and radio base station WO2013061992A1 (en)

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